7 1. JIS 2. 1 1 2.1 2.2 1 200°C 1 450°C UOE Introduction to Steel Pipes MASAMURA Katsumi JFE JIS Abstract: Steel pipes are manufactured in variety of processes and used for various purposes along with many different expected properties. This article outlines applications, characteristics and considerable items for actual use of steel pipes which are mostly provided in Japanese Industrial Standards